Soundeus Soundglasses 5S

Active speakers have a custom built-in amplifier (typically a PC speakers). Conversely, passive systems require an external amplifier, from which the sound goes to each speaker.

The number of channels refers to the number of independent audio signals that can be reproduced simultaneously. An example might be 2-channel stereo sound, where each channel represents one ear (left and right), or 5.1 channel surround sound, which has five full channels (front left, center, front right, rear left, rear right) and one channel for the subwoofer.

In terms of frequency range, speakers are produced with different properties. It is due to both, its purpose and secondly, the physical properties of individual structures. It is the lowest value in...

Electrical parameter that expresses resistance of circuits in speakers and is expressed in ohms. Speaker with an impedance 4 ohms will have twice the power than the speaker with an impedance of 8...

The ingress protection (IP) is an internationally standardised code that identifies the resistance of electrical appliances against the ingress of foreign items and liquids, especially water. It is expressed in the so-called IP code, which consists of the "IP" followed by two digits: the first indicates the protection against dangerous contact and foreign objects, the second indicates the degree of protection against water ingress.

Clearly defines the headphone design. Earbuds and canalbuds are suitable for sport or travel, while full-size headphones are suitable for comfortable home listening or as a PC accessory. 

The design of the headphones is a fundamental aspect that affects the way the headphones reproduce sound, as well as how the headphones sit on or around the ears. The main types of headphone designs include closed, open and semi-closed. Closed headphones provide sound isolation and are ideal for listening in noisy environments. Open-back headphones, on the other hand, allow air to pass through the headphone drivers, resulting in a more natural sound. Semi-closed headphones are a compromise between the two types, offering balanced sound and a medium level of isolation.

3.5mm jack connector (in case of PC headphones, a pair of 3.5mm jack connectors or USB connector) is definitely the most widespread connector type. Wireless headsets, using Bluetooth or radio channels...

Frequency is one of the most important parameters when choosing headphones. Generally, the higher frequency range of headphones, the better sound quality. The lower limit of the frequency range deals...

Frequency is one of the most important parameters when choosing headphones. Generally, the higher frequency range of headphones, the better sound quality. The upper limit of the frequency range deals...

Sensitivity is measured in decibels per milliwatt, or dB/mW, and describes the sound pressure level. Generally, the higher the sensitivity, the better the headphones are for sound reproduction. A...

V parametroch slúchadiel sa stretávame s pojmom impedancia. Ide o parameter, ktorý by sa nemal podceňovať. V podstate totiž vyjadruje to, ako veľmi dobre – alebo ako veľmi zle, si vaše slúchadlá budú rozumieť so zdrojom zvuku, telefónom, prehrávačom alebo receiverom.

Microphone directionality describes the microphone's sensitivity to sound from various directions.

Dioptrie sú mierou, ktorá určuje optickú silu šošoviek v okuliaroch a je nevyhnutná na korekciu refrakčných chýb, ako je krátkozrakosť, ďalekozrakosť alebo astigmatizmus. Správne zvolené dioptrie sú kľúčové na zabezpečenie jasného a ostrého videnia a odporúčajú sa na základe optometrického vyšetrenia.